diff --git a/nanoFramework.Json.Test/nanoFramework.Json.Test.nfproj b/nanoFramework.Json.Test/nanoFramework.Json.Test.nfproj
index 607a1db5..0314da0f 100644
--- a/nanoFramework.Json.Test/nanoFramework.Json.Test.nfproj
+++ b/nanoFramework.Json.Test/nanoFramework.Json.Test.nfproj
@@ -30,7 +30,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=1.1.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Text.1.1.1-preview.12\lib\nanoFramework.System.Text.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Text.1.1.1-preview.14\lib\nanoFramework.System.Text.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Windows.Storage.Streams, Version=1.10.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
diff --git a/nanoFramework.Json.Test/packages.config b/nanoFramework.Json.Test/packages.config
index a4c7354b..34ba100c 100644
--- a/nanoFramework.Json.Test/packages.config
+++ b/nanoFramework.Json.Test/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="1.9.1-preview.6" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Text" version="1.1.1-preview.12" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Text" version="1.1.1-preview.14" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Windows.Storage.Streams" version="1.10.1-preview.12" targetFramework="netnanoframework10" />
 </packages>
\ No newline at end of file
diff --git a/nanoFramework.Json.nuspec b/nanoFramework.Json.nuspec
index c5a34fc4..6a9cf07a 100644
--- a/nanoFramework.Json.nuspec
+++ b/nanoFramework.Json.nuspec
@@ -21,8 +21,8 @@
     <tags>nanoFramework C# csharp netmf netnf nanoframework json</tags>
     <dependencies>
       <dependency id="nanoFramework.CoreLibrary" version="1.9.1-preview.6" />
-      <dependency id="nanoFramework.System.Collections" version="1.2.0-preview.12" />
-      <dependency id="nanoFramework.System.Text" version="1.1.1-preview.12" />
+      <dependency id="nanoFramework.System.Collections" version="1.2.0-preview.14" />
+      <dependency id="nanoFramework.System.Text" version="1.1.1-preview.14" />
       <dependency id="nanoFramework.Windows.Storage.Streams" version="1.10.1-preview.12" />
     </dependencies>
   </metadata>
diff --git a/nanoFramework.Json/nanoFramework.Json.nfproj b/nanoFramework.Json/nanoFramework.Json.nfproj
index c95a2459..049d113c 100644
--- a/nanoFramework.Json/nanoFramework.Json.nfproj
+++ b/nanoFramework.Json/nanoFramework.Json.nfproj
@@ -45,11 +45,11 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Collections, Version=1.2.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Collections.1.2.0-preview.12\lib\nanoFramework.System.Collections.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Collections.1.2.0-preview.14\lib\nanoFramework.System.Collections.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=1.1.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Text.1.1.1-preview.12\lib\nanoFramework.System.Text.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Text.1.1.1-preview.14\lib\nanoFramework.System.Text.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Windows.Storage.Streams, Version=1.10.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
diff --git a/nanoFramework.Json/packages.config b/nanoFramework.Json/packages.config
index bbd08755..46e722b3 100644
--- a/nanoFramework.Json/packages.config
+++ b/nanoFramework.Json/packages.config
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="1.9.1-preview.6" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Collections" version="1.2.0-preview.12" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Text" version="1.1.1-preview.12" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Collections" version="1.2.0-preview.14" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Text" version="1.1.1-preview.14" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Windows.Storage.Streams" version="1.10.1-preview.12" targetFramework="netnanoframework10" />
   <package id="Nerdbank.GitVersioning" version="3.1.91" targetFramework="netnanoframework10" developmentDependency="true" />
 </packages>
\ No newline at end of file